After a 13-hour search, workers in Los Angeles rescued a 13-year-old boy who had fallen into a sewer pipe. (Photo by LA Times)

Workers inspected about one-third of a 6,400-foot sewer system under Griffith Park in Los Angeles over the span of 13 hours Sunday night into Monday. The objective had nothing to do with the system itself. Rather it was about rescuing a 13-year-old boy who had accidentally fallen into a sewer pipe.

According to a report by the Los Angeles Times, Jesse Hernandez was picnicking with his family in Griffith Park prior to going missing at about 4:30 p.m. on Sunday. The Los Angeles Fire Department said that Hernandez and his friends had climbed over a chain-link fence in the area and entered an abandoned maintenance shed. Hernandez fell 25 feet into a 4-foot-wide pipe when a wooden plank he was standing on gave way.

More than 100 workers from various city agencies had already searched about 2,400 feet of the system that parallels the L.A. River and crosses under freeways when Hernandez was found alive and well at 5:30 a.m. Monday.

“Once I pulled the lid off the manhole cover he was just like right there,” said the worker who was preparing to insert cameras into the sewer when he spotted Hernandez.